Proteomics, an holistic approach for plant biology.

With the recent advances in robotics, bioinformatics and nanotechnology, it is now possible today for the biologists to observe and analyze several hu ndreds or thousands of biological molecules at the same time. This is the c ase at the DNA lever, in genomics, at the mRNA (or cDNA) level, in transcri ptomics, and at the protein level, in proteomics. In this short communicati on, arguments are given for the development of proteomics as a necessary co mplement to the other two, prevalent today, approaches. Examples are given that demonstrate the power of such analysis and few perspectives are drawn.